Update README.md

Co-authored-by: Gonzalo Muñoz <[email protected]>

Author: fjtirado

README.md

@@ -8,7 +8,7 @@ Provides the Java API for the [Serverless Workflow Specification](https://github
 With the SDK you can:
 
 * Read workflow JSON and YAML definitions
-* Write workflow definition in JSON and YAML format. 
+* Write workflow definitions in JSON and YAML formats. 
 * Test your workflow definitions using the reference implementation.